package com.atguigu.gulimall.auth.controller;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.AuthServerConstant;
import com.atguigu.common.exception.BizCodeEnume;
import com.atguigu.common.utils.R;
import com.atguigu.common.vo.MemberRespVo;
import com.atguigu.gulimall.auth.fegin.MemberFeginService;
import com.atguigu.gulimall.auth.fegin.ThirdPartFeignService;
import com.atguigu.gulimall.auth.vo.UserLoginVo;
import com.atguigu.gulimall.auth.vo.UserRegistVo;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;

import javax.servlet.http.HttpSession;
import javax.validation.Valid;
import javax.validation.constraints.NotEmpty;
import java.util.HashMap;
import java.util.Map;
import java.util.Random;
import java.util.UUID;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

@Controller
public class LoginController {

    @Autowired
    ThirdPartFeignService thirdPartFeignService;

    @Autowired
    StringRedisTemplate redisTemplate;

    @Autowired
    MemberFeginService memberFeginService;

    /**
     * 发送一个请求直接跳转到一个页面
     * SpringMVC viewcontroller;将请求和页面映射过来
     */


//    @GetMapping("/login.html")
//    public String loginPage(){
//        return "login";
//    }
//
//    @GetMapping("/reg.html")
//    public String regPage(){
//        return "reg";
//    }

    @ResponseBody
    @GetMapping("/sms/sendcode")
    public R sendCode(@RequestParam("phone") String phone){

        String redisCode = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + phone);
        if(!StringUtils.isEmpty(redisCode)){
            long l = Long.parseLong(redisCode.split("_")[1]);
            if(System.currentTimeMillis() - l < 60000){
                return R.error(BizCodeEnume.SMS_CODE_EXCEPTION.getCode(),BizCodeEnume.SMS_CODE_EXCEPTION.getMsg());
            }
        }
        String code = "";
        for(int i = 0; i < 4; i++){
            code += new Random().nextInt(10);
        }

//        String code = UUID.randomUUID().toString().substring(0, 5);
        String substring = code+"_"+System.currentTimeMillis();
        //redis缓存验证码
        System.out.println(code);
        redisTemplate.opsForValue().set(AuthServerConstant.SMS_CODE_CACHE_PREFIX+phone,substring,10, TimeUnit.MINUTES);
        thirdPartFeignService.sendCode(phone,code);

        return R.ok();
    }


    @PostMapping("/regist")
    public String regist(@Valid UserRegistVo vo, BindingResult result, RedirectAttributes redirectAttributes){
        if(result.hasErrors()){
            Map<String, String> errors = result.getFieldErrors().stream().collect(Collectors.toMap(fieldError -> {
                return fieldError.getField();
            }, fieldError -> {
                return fieldError.getDefaultMessage();
            }));
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.gulimall.com/reg.html";
        }

        String code = vo.getCode();
        String s = redisTemplate.opsForValue().get(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
        if(!StringUtils.isEmpty(s)){
            if(code.equals(s.split("_")[0])){//验证码通过。
                //删除验证码
                redisTemplate.delete(AuthServerConstant.SMS_CODE_CACHE_PREFIX + vo.getPhone());
                //验证码通过。调用远程服务
                R r = memberFeginService.regist(vo);
                if(r.getCode() == 0){
                    //成功
                    return "redirect:http://auth.gulimall.com/login.html";
                }else{
                    Map<String,String> errors = new HashMap<>();
                    errors.put("msg",r.getData("msg",new TypeReference<String>(){}));
                    redirectAttributes.addFlashAttribute("errors",errors);
                    return "redirect:http://auth.gulimall.com/reg.html";
                }

            }else {
                Map<String,String> errors = new HashMap<>();
                errors.put("code","验证码错误");
                redirectAttributes.addFlashAttribute("errors",errors);
                return "redirect:http://auth.gulimall.com/reg.html";
            }
        }else{
            Map<String,String> errors = new HashMap<>();
            errors.put("code","验证码错误");
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.gulimall.com/reg.html";
        }

    }


    @GetMapping("login.html")
    public String loginPage(HttpSession session){
        Object attribute = session.getAttribute(AuthServerConstant.LOGIN_USER);
        if(attribute == null){
            //没登陆
            return "login";
        }else {
            return "redirect:http://gulimall.com";
        }
    }


    /**
     * 传过来的是form表单数据是K-V形式所以不能加ReqeustBody注解
     * 如果穿过来的是json则需要加ReqeustBody注解
     * 调用远程服务的时候，两个服务间传的是json
     */
    @PostMapping("/login")
    public String login(UserLoginVo vo, RedirectAttributes redirectAttributes, HttpSession session){
        //调用远程服务
        R login = memberFeginService.login(vo);
        if (login.getCode() == 0){
            MemberRespVo data = login.getData("data", new TypeReference<MemberRespVo>() {
            });
            session.setAttribute(AuthServerConstant.LOGIN_USER,data);
            return "redirect:http://gulimall.com";
        }else{
            Map<String,String> errors = new HashMap<>();
            errors.put("msg",login.getData("msg",new TypeReference<String>(){}));
            redirectAttributes.addFlashAttribute("errors",errors);
            return "redirect:http://auth.gulimall.com/login.html";
        }
    }

}
